Qualifying Degrees: animal science, aquatic and fisheries science, aquatic biology, bacteriology, biochemical engineering, biochemistry, biological sciences, biology, biophysics, chemical engineering, chemical science, chemistry, civil engineering, civil engineering technology, climate change, coastal ecology, coastal engineering, coastal environmental management, coastal geology, coastal management, coastal resources management, conservation biology, earth science, ecohydrology, ecology, ecosystem management, electrical engineering, electrical science, engineering science, engineering science in wastewater, engineering technology, environmental and natural resources conservation, environmental biology, environmental engineering, environmental health, environmental resource engineering, environmental science, environmental studies, environmental toxicology, fisheries biology, geochemistry, geological engineering, geology, health physics, hydrology, hydrology and water resource science, industrial hygiene, marine biology, marine ecology, marine science, mechanical engineering, medical science, medical technology, microbiology, mining engineering, molecular biology, natural sciences, nursing, occupational health, ocean and coastal resources, petroleum engineering, physical science, physics, pre-med, structural engineering, toxicology, transportation engineering, urban forestry, water and wetland resources management, water resources engineering, water resource management, water resources and environmental engineering or watershed hydrology. Public Health Specialist 1 (Exposure Assessment), Grade 18: A qualifying bachelors or higher degree and two years of professional experience in assessing the impact of toxic substances on public health; OR a bachelors degree including or supplemented by 30 qualifying semester credit hours and two years of professional qualifying experience; OR a qualifying masters degree and one year of professional qualifying experience; OR a masters degree including or supplemented by 30 qualifying semester credit hours and one year of professional qualifying experience.